1 /*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <log/log_id.h>
18 #include <private/android_logger.h>
19
20 #include <nativehelper/JNIHelp.h>
21 #include "jni.h"
22
23 #include "core_jni_helpers.h"
24 #include "eventlog_helper.h"
25
26 namespace android {
27
28 constexpr char kSecurityLogEventClass[] = "android/app/admin/SecurityLog$SecurityEvent";
29 template class EventLogHelper<log_id_t::LOG_ID_SECURITY, kSecurityLogEventClass>;
30 using SLog = EventLogHelper<log_id_t::LOG_ID_SECURITY, kSecurityLogEventClass>;
31
android_app_admin_SecurityLog_isLoggingEnabled(JNIEnv * env,jobject)32 static jboolean android_app_admin_SecurityLog_isLoggingEnabled(JNIEnv* env,
33 jobject /* clazz */) {
34 return (bool)__android_log_security();
35 }
36
android_app_admin_SecurityLog_readEvents(JNIEnv * env,jobject,jobject out)37 static void android_app_admin_SecurityLog_readEvents(JNIEnv* env, jobject /* clazz */,
38 jobject out) {
39
40 if (out == NULL) {
41 jniThrowNullPointerException(env, NULL);
42 return;
43 }
44 SLog::readEvents(env, ANDROID_LOG_NONBLOCK, 0, out);
45 }
46
android_app_admin_SecurityLog_readEventsSince(JNIEnv * env,jobject,jlong timestamp,jobject out)47 static void android_app_admin_SecurityLog_readEventsSince(JNIEnv* env, jobject /* clazz */,
48 jlong timestamp,
49 jobject out) {
50
51 if (out == NULL) {
52 jniThrowNullPointerException(env, NULL);
53 return;
54 }
55 SLog::readEvents(env, ANDROID_LOG_NONBLOCK, timestamp, out);
56 }
57
android_app_admin_SecurityLog_readPreviousEvents(JNIEnv * env,jobject,jobject out)58 static void android_app_admin_SecurityLog_readPreviousEvents(JNIEnv* env, jobject /* clazz */,
59 jobject out) {
60
61 if (out == NULL) {
62 jniThrowNullPointerException(env, NULL);
63 return;
64 }
65 SLog::readEvents(env, ANDROID_LOG_NONBLOCK | ANDROID_LOG_PSTORE, 0, out);
66 }
67
android_app_admin_SecurityLog_readEventsOnWrapping(JNIEnv * env,jobject,jlong timestamp,jobject out)68 static void android_app_admin_SecurityLog_readEventsOnWrapping(JNIEnv* env, jobject /* clazz */,
69 jlong timestamp,
70 jobject out) {
71 if (out == NULL) {
72 jniThrowNullPointerException(env, NULL);
73 return;
74 }
75 SLog::readEvents(env, ANDROID_LOG_NONBLOCK | ANDROID_LOG_WRAP, timestamp, out);
76 }
77
78 /*
79 * JNI registration.
80 */
81 static const JNINativeMethod gRegisterMethods[] = {
82 /* name, signature, funcPtr */
83 { "isLoggingEnabled",
84 "()Z",
85 (void*) android_app_admin_SecurityLog_isLoggingEnabled
86 },
87 { "writeEvent",
88 "(I[Ljava/lang/Object;)I",
89 (void*) SLog::writeEventArray
90 },
91 { "readEvents",
92 "(Ljava/util/Collection;)V",
93 (void*) android_app_admin_SecurityLog_readEvents
94 },
95 { "readEventsSince",
96 "(JLjava/util/Collection;)V",
97 (void*) android_app_admin_SecurityLog_readEventsSince
98 },
99 { "readPreviousEvents",
100 "(Ljava/util/Collection;)V",
101 (void*) android_app_admin_SecurityLog_readPreviousEvents
102 },
103 { "readEventsOnWrapping",
104 "(JLjava/util/Collection;)V",
105 (void*) android_app_admin_SecurityLog_readEventsOnWrapping
106 },
107 };
108
register_android_app_admin_SecurityLog(JNIEnv * env)109 int register_android_app_admin_SecurityLog(JNIEnv* env) {
110 SLog::Init(env);
111
112 return RegisterMethodsOrDie(
113 env,
114 "android/app/admin/SecurityLog",
115 gRegisterMethods, NELEM(gRegisterMethods));
116 }
117
118 }; // namespace android
119